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4 years ago

The reaction CH2CH2 + H2 → CH3CH3 is an example of

Chemistry

2 answers:

Tpy6a [65]4 years ago

7 0

Answer:

Addition reaction.

Explanation:

There are four possible type of reactions in an organic compound, generally.

a) substitution: where a group or atoms substitutes another group or atom. for example reaction of an alkyl halide with hydroxide ion to give alcohol, where hydroxide ion replaces a halide ion.

b) elimination: Where a group or atom get eliminated from a molecule. For example synthesis of an alkene from an alkyl halide by elimination of hydrogen and halogen.

c) rearrangement: Here there is no addition or substitution or elimination but the molecule undergoes some atomic rearrangements to give a stable form.

d) Addition : in this there is addition of a molecule on a double bond.

In the given example the alkene is undergoing addition reaction as hydrogen is being added on it to give saturated alkane molecule.

Viefleur [7K]4 years ago

4 0

The choices can be found elsewhere and as follows:

(1) substitution
(2) esterification
(3) addition
(4) fermentation

I believe the correct answer is option 3. The reaction CH2CH2 + H2 → CH3CH3 is an example of an addition reaction. It is a reaction where two or more molecules combine to form a larger one. Hope this answers the question.

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Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). If you mix butane and oxygen in the correct

Fittoniya [83]

Answer:

118.776 mmHg

Explanation:

The equation of the reaction is;

C4H10(g) + 13/2 O2(g) ------> 4CO2(g) + 5H20(g)

Now the mole ratio according to the balanced reaction equation is;

1 : 6.5 : 4 : 5

Hence, the total number of moles present = 1 + 6.5 + 4 + 5 = 16.5 moles

Mole fraction of water vapour = 5/16.5 = 0.303

We also know that;

Partial pressure= mole fraction * total pressure

Partial pressure of H20(g) = 0.303 * 392 mmHg = 118.776 mmHg

7 0

3 years ago

What is the mass of 20.0 mL solution if its density is 1.84 g/mL?

gogolik [260]

Answer:

mass=36.8 g

Explanation:

density = mass/ volume

mass= density × volume

mass= 1.84× 20.0

mass=36.8 g

3 0

3 years ago

How many atoms are in 1.75 mol CHCL3

vaieri [72.5K]

1 mol = 6.022 x 10²³ atoms

In order to find how many atoms, dimly multiply the amount of moles you have by 6.022 x 10²³ or Avogadro's number.

So you have 1.75 mol CHC1₃ x (6.022x10²³) = 1.05385 x 10²⁴ atoms of CHCl₃

But now you have to round because of the rules of significant figures so you get 1.05 x 10²⁴ atoms of CHCl₃

6 0

3 years ago

Read 2 more answers

Consider a transition of the electron in the hydrogen atom from n=3 to n=7.

kow [346]

Answer:

For a: The wavelength of light is $1.005\times 10^{-6}m$

For b: The light is getting absorbed

Explanation:

For a:

To calculate the wavelength of light, we use Rydberg's Equation:

$\frac{1}{\lambda}=R_H\left(\frac{1}{n_i^2}-\frac{1}{n_f^2} \right )$

Where,

$\lambda$ = Wavelength of radiation

$R_H$ = Rydberg's Constant = $1.097\times 10^7m^{-1}$

$n_f$ = Higher energy level = 7

$n_i$ = Lower energy level = 3

Putting the values in above equation, we get:

$\frac{1}{\lambda }=1.097\times 10^7m^{-1}\left(\frac{1}{3^2}-\frac{1}{7^2} \right )\\\\\lambda =1.005\times 10^{-6}m$

Hence, the wavelength of light is $1.005\times 10^{-6}m$

For b:

There are two ways in which electrons can transition between energy levels:

Absorption spectra: This type of spectra is seen when an electron jumps from lower energy level to higher energy level. In this process, energy is absorbed.
Emission spectra: This type of spectra is seen when an electron jumps from higher energy level to lower energy level. In this process, energy is released in the form of photons.

As, the electron jumps from lower energy level to higher energy level. The wavelength is getting absorbed.

6 0

4 years ago

What is the half-life of a radioisotope if 25.0 grams of an original 200.-gram sample of the isotope remains unchanged after 11.

erastova [34]

1. 200/2=100. 100/2=50. 50/2=25. So that's 3 to get to 25.

2. 11.46/3=3.82

The answer is (2).

7 0

3 years ago

Read 2 more answers